Gasification uses heat and an oxidant, such as O₂ or H₂O vapor, to break down solid carbohydrate materials into basic building block chemicals (CO, H₂, CO₂, H₂O, CH₄) (Frontline Bioenergy, 2006). Many feed stocks can be used during gasification including coal and agricultural byproducts such as manure and cotton gin trash. Gasifiers produce combustible gases which can be obtained for use as SynGas or producer gas, or can be used to generate heat energy or electricity. There are several types of gasifier concepts available, including fluid-bed, entrained flow, and downdraft gasifiers. The purpose of this research is to describe the performance of a portable downdraft gasifier fueled using cotton gin trash. Energy efficiency will be determined, and the types and concentrations of combustibles gases that are produced will be reported.